He's already angry over Ozil's Real exit and now Northern Ireland have vowed to give Ronaldo a torrid time tonight...

He is already seething over Real Madrid's decision to sell Mesut Ozil to Arsenal, and Cristiano Ronaldo's mood is hardly likely to be lifted by the reception waiting for him at Windsor Park.

A typically robust approach from Michael O'Neill's side put a dampener on Ronaldo's 100th Portugal appearance, in Porto last October, as Northern Ireland threatened a major upset until being pegged back by a last-gasp equaliser in a 1-1 draw.

Stare of a winner: Ronaldo trains with his Portuguese teammates at Windsor Park

Ball control: Ronaldo shows off his skills in training

Attacking duo: Manchester United's Nani, left, and Ronaldo

The Northern Ireland manager is promising more of the same from a side buoyed by a stirring 1-0 win over Russia last month and eager to knock Portugal off the path to next summer's World Cup finals.

'To be perfectly honest, I haven't been too concerned about whether he approves of Ozil joining Arsenal,' he said. 'It hasn't exactly been at the forefront of my mind.

'With Aaron Hughes and Ryan McGivern both out, I've been more bothered about hamstrings, groin strains and tight calves.

'If I'm also being 100 per cent honest, I don't want it to be the beautiful game tomorrow night. If it is, we'll be giving them the chance to excel.

'The Ronaldos and Moutinhos of this world would love it to be an open game with space to exploit, but we don't intend obliging.

Hard worker: Ronaldo familarises himself with the Windsor Park pitch

'They are a very gifted bunch of individuals, so it is important that, from the word go, they have a difficult night.

'We played some outstanding football against Russia, but also showed you can be physical within the boundaries of the game.

'That's what we must do against Portugal. The pressure is on them, because after the points they have lost on the road in recent group games, they can't afford to drop any more.'

The absence of Hughes and McGivern, as well as the suspended Danny Lafferty, leaves O'Neill without a single recognised full-back. He may draft in Chris Baird, who is without a club after being released by Fulham, and Newcastle winger Shane Ferguson.